Thread-spinning mechanism.



I B.L.BLO0M. THREAD S PlNNlNG MECHANISM. APPLICATION FILED DEC-15.1917.

1,302,626. Patented May 6, 1919.

I A TTUR/VEY.

UNITED STATES.

PATENT OFFICE.

BENJAMIN L. BLOOM, OF BROOKLYN, NEW YORK, ASSIG-NOR TO JULIUS KAYSER & CO.,

THREAD-SPINNING MECHANISM.

Specification of Letters Patent.

Patented May 6, 1919.

Application filed December 15, 1917. Serial No. 207,370.

To all whom it may concern Be it known that I, BENJAMIN L. Bnoon, a citizen of the United States, and a resldent of the borough of Brooklyn, county of Kings, city and State of New. York, have invented a new and useful Improvement 1n Thread-Spinning Mechanismyof which the following is a specification, reference being had to the accompanying drawings.

In the process of spinning threads as heretofore practised considerable. wastage occurs because of the breaking of the single threads which are to compose the finished or spun thread, due sometimes to the frictional wear against the ad ust1ng or spacing bar of the mechanism located between the feed rollers and also because the ends of the thread or threads, once they are broken, are apt to be drawn into the gearing of the machine, resulting in the destruction of more or less )f it. The loss in the aggregate is apt to be considerable in any event, but it becomes a matter of very serious con sequence Where the spun threads are of a high gradeor expenslve variety, as,-for instance, silk. Various attempts have heretofore been made and various modifications in thread spinning machines have been devised in the endeavor to avoid the loss referred to, but so far as I am aware none prior to this present invention have been of much practical value. Actual and extended use of the improvements described herein has shown that it quite efficiently solves the problem.

In the drawings Fi ure 1 is an elevation of one form of threa spinning apparatus, showing the parts immediately involved;

Fig. 2 is an edgewise sectional view of that 4 which is shown in Fig. 1, taken on the line 22 of Fig. 1, looking in the direction of the-arrows, the parts being in their, operating or thread spinning position; Fig. 3

is a View similar to Fig. 2, the parts being shown in the osition. they occupy when owing to the reakage of a thread the gearing has automatically separated and stopped; Fig. 4 is a plan view on' the line 4-4 of Fig. 1 looking in the direction of the arrow.

lit will be understood that in the drawings hereof 1 illustrate a form of thread spinning apparatus much in use, but that there are other forms differing details of construction. Yet my inventlon about to be described can be beneficially employed in practically all of them.

1, 1, represent the spools which carry the single thread 2, 2, Which pass together through the guide 3 and are thence conducted forwardly over the feed rollers 4,4. They are each carried around the feed rollers as shown, in so doing passing over the spacing bar 5 located between the feed rollers as seen best in Figs. 1 and 4', by which they are equally spaced, as shown best in Figs. 2 and 4; after passing over the spacing bar they are carried downwardly as shown at 6 in Fig. 1 to the spinning devices where they are laid up into the desired finished thread. 7 is the main driving shaft, 8 the driving gear, 9, 9, the pinions on the respective shafts of the rollers 4, 4, whereby they are driven, 10 a vertical rod by which the feed rollers 4 and their frame ll-are supported, 12 the usual cushioning spring,

.which it has heretofore been constructed,

or if made of other material because of the blndlng action of the thread in the angle between the practically horizontal and the practically vertical portions of the bar. Under my construction I make this bar entirely of porcelain having a highly polished and hard enameled surface and instead of joining the downwardly inclined, although substantially horizontal portion and the substantially vertical portion of this bar at right angles to each other, I round the corner, as shown at 13, on such an are or curvature that the threads which contact with this part of the bar shall maintain their properly spaced relation without any deleterious frictional contact between themselves, nor by reason of their being drawn into and chafed by the binding action of a rectangular corner, which I eliminate, in other words, the thread or threads which ass over thebar at the stated curved part s all be as free and as devoid of friction as the threads which pass over the other parts of the bar, and since all threads known to me, particularly the expensive ones, are absolutely neutral to porcelain, and since a highly polished hard and smooth porcelain surface is in no wise affected by them, I have found a spacing bar made under my invention may be used indefinitely without injury to the threads and without incurring injury itself because of them. Inasmuch as my porcelain bars are somewhat fragile and are liable to become broken because of carelessness on the part of operators or otherwise, I prefer to provide means whereby a new one may be readily substituted for a broken one. This I effect by forming a lug (see Figs. 2 and 3) on the inside of the feed roller frame 11, which is suitably bored so as to receive the end of the porcelain spacing bar, and I provide it with a set screw 24:, whereby the bar edge 25, see Figs. 2 and 3, of the feed roller frame, I attach, as by screws or otherwise, a flexible apron 26, preferablyof rubber, thin celluloid or the like, which normally rests upon the upper surface of the guard frame 14, see Fig. 1, which covers themain shaft 7, as shown in Fig. 2; should one or more of the threads break, then in a manner well understood, the driving gear 81 and the pinions 9 of the feed rollers are instantly separated by the automatic elevation of the feed roller frame, which carries the feed rollers and all associated parts with it, and when this occurs an open space is formed between the guard plate 14 and the lower edge 25 of the feed roller frame, as clearly shown in Fig. 3, through which the end of the broken thread shown at X see Fig. 3, is apt to be drawn into the gearing. My improvement effectively prevents this because when this upward movement of the feed roller frame takes place, my flexi ble and resilient apron 26 automatically assumes the position shown in Fig. 3, closing the opening referred to and effectivel preventing the assage of the broken end of the thread or threads to the gearing, and upon the descent of the feed roller frame to its normal position the apron automatically slides outwardly over the upper surface of the guard plate 14 and thusallparts are returned to their primary position.

Although I prefer to make the apron of flexible and resilient material, yet'it may be made of rigid material, as, for instance, a thin metal plate, caused to automatically adjust itself to the upward and downward movements of the feed roller frame by the appropriate action of a spring or other in strumentality to positively effect its requisite movements.

It will be obvious to those who are familiar with such matters that departures may be made from that which I have above described and illustrated and yet the essentials of my invention be employed. I therefore do not limit myself to the details de. scribed.

I claim:

1. In a thread spinning machine, the combination of a movable feed roller frame, feed rollers and pinions therefor carried by said frame, a spacing bar made entirely of seamless porcelain and having a substantially Vertical part and a substantially horizontal part which are united on the arc of a circle, detachably attached to the feed roller frame, and a flexible apron also attached to the feed roller frame and which rests upon the cover of the main driving shaft and will automatically adjust itself upon the separation of the feed roller pinions from the driving gear sliding upon the said cover.

'2. In a thread spinning machine, the combination of feed rollers, pinions therefor, a movable frame which supports the said rollers and pinions and automatically separates from the driving gear upon the breaking of a thread, and a flexible apron attached to the feed roller frame and which laps upon the cover of the driving shaft and automatically adjusts itself upon the separation of the feed roller pinions from the driving gear sliding upon the said cover.

In testimony whereof I have signed my name to this specification.

BENJAMIN L. BLOOM. 

